High-Performance Drive with Permanent Magnet Synchronous Motor Based on Model Predictive Control Grant uri icon

abstract

  • Modern practices in the area of electric motor-driven systems are developed facilitating the replacement or the upgrade of the existing energy-consuming systems with more efficient and reliable ones. Two promising technologies for high-performance drives are thus investigated: Permanent Magnet Synchronous Machines (PMSMs) and Model Predictive Control (MPC). PMSMs are characterized by higher efficiency than their counterparts, while their highly nonlinear nature is addressed by a MPC providing robustness and high dynamics over conventional strategies. Unlike the majority of classical control, MPC scheme enables the incorporation of nonlinear phenomena such as direct- and cross-saturation effects into the motor model. Embodying such phenomena into the equivalent circuit of motor allows accurate control over a wide speed range even under increased loading. The determination process of the nonlinear associations demands the use of finite element methods in conjunction with a field-circuit system approach. The extraction of the advanced model, along with the use of MPC, favors beneficial characteristics and extends the use to motor configurations with higher levels of saliency such as interior PMSMs. The incorporation of the nonlinear machine model with the dependent parameters enables also the development of a sensorless strategy for a wide speed range and loadings. This approach is expected to render the system capable of effectively operating not only in a wide speed range, but also for several loading conditions and different machine types. The theoretical findings of the developed system are necessary to be validated through an experimental PMSM drive setup. The comparative study will put into evidence all superior characteristics that the proposed system concentrates and possible disadvantages will emerge in order to be properly amended

date/time interval

  • 2016 - 2018